André Schürrle believes Chelsea may have found the extra ingredients needed to win titles in Cesc Fábregas and Diego Costa. The new duo, signed for a combined £60m this summer, made an immediate impact as the Premier League favourites opened up with a 3-1 win at newly promoted Burnley.

Costa, a former Atlético Madrid player, lashed in an equaliser after Burnley had taken a shock lead, while Fábregas was influential throughout and had a hand in all three goals.

Asked if the pair could make the difference, Schürrle said: “Yes, I hope so. It was very good. I think for Diego it was a perfect start. For a striker to come in and score his first goal is always important. He played fantastic in the friendly, and he scored. And now his first goal in competition.

“Cesc was fantastic for me as well, he always had control of the game. He was always running – two assists. So it was a fantastic night for them both but it was only the first match and we have to keep going.”

Schürrle said: “I think a player like Cesc, every team wants him, so we are happy that he decided for Chelsea. We are happy that he is a Blue now. I am 100% sure he will help us this season.”

One of the main talking points from the match was Mourinho’s selection of Thibaut Courtois, who has returned from a successful loan at Atlético Madrid, in place of the long-time goalkeeper Petr Cech. Schürrle hopes it does not spell the end for Cech.

He said: “I hope he stays, of course. He is a great character and is very important for the team. He is a fantastic keeper, one of the best. It’s his decision what he wants to do, but everyone wants him to stay and with him we have a better squad. We will need everyone because hopefully we will have 50-60 matches in all competitions.”

Schürrle himself is playing catch-up after his involvement in Germany’s World Cup win meant a late start for pre-season training. The 23-year-old added: “I’ve only been training for two weeks after my holidays. It was from zero to 100, directly into team-training and everything.

“There’s a lot of work for me, but I’m feeling good. I’m enjoying my game, I’m enjoying being on the pitch. I think the whole team played well. We had a lot of control, passes, good combinations. It was a lot of fun on the pitch.”

Schürrle is now in his second season at Stamford Bridge following an £18m move from Bayer Leverkusen. He has been linked with a move as Mourinho reshapes his squad but the German has no intention of leaving and plans to use his World Cup experience to make a big impression.

He said: “I enjoyed the World Cup a lot, so I got out of that with a lot of confidence. I am hungry, I want to achieve something with Chelsea. I want to win titles with Chelsea. It was a good start for me but when I am 100% fit, there will be more.”